Universally mounted work surface height adjustor with suction cups

ABSTRACT

An apparatus for adjusting the height of a work surface comprising a height-adjusting mechanism and a universal mount that ensures compatibility with a wide variety of desks and other work surfaces. The apparatus may include one or more suction cups for securing the work surface to the height adjustment mechanism. The apparatus may also include a bent universal adapter bracket.

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the priority of U.S. application Ser. No.14/570,250, filed on Dec. 15, 2014, which is pending and claims thepriority of U.S. application Ser. No. 14/247,511, filed on Apr. 8, 2014and issued as U.S. Pat. No. 8,919,264. The prior applications are hereinincorporated by reference for all purposes in their entirety.

GOVERNMENT LICENSE RIGHTS

This invention was not made with government funding or support.

FIELD OF THE INVENTION

Embodiments of the present invention relate generally to an apparatusfor adjusting one or more adjustable elements of a linear, horizontalsurface. More particularly, the embodiments of the present invention aredirected to an apparatus for adjusting the height of a horizontalsurface, such as a desktop.

BACKGROUND OF THE INVENTION

Adjustable height work surfaces such as adjustable height desktops areknown. Such adjustable height work surfaces can accommodate individualuser preferences for desktop height in order to maximize ergonomicefficiency and comfort within an office environment.

Further, there is a trend toward working while standing. This isbelieved to have a number of health benefits and can increase comfort,particularly for individuals who find it difficult to sit for extendedperiods of time. Some individuals prefer to stand at the desk all ormost of the time, whereas other individuals prefer to alternate standingand sitting at the desk. This trend thus increases the need for worksurface height adjusting mechanisms which can be actuated quickly andconveniently by the end user, without the use of tools.

Office furniture manufacturers have responded to this trend by offeringmotorized desk height adjustment as an option available with themanufacturer's own brand of desks and modular office furniture. However,this is often expensive, and the availability of such an option for newfurniture does not address the needs of millions of users of existingdesks that currently lack convenient, user-friendly height adjustment.Also, retrofitting existing desks for height adjustment presentssignificant challenges, because of a lack of standards forinterconnection of modular office equipment. In general, eachmanufacturer has its own system of interconnecting modules andaccessories.

What is needed is a convenient, inexpensive, and universally applicableapparatus for adding an automatic height adjustment capability todesktops and other work surfaces.

SUMMARY OF THE INVENTION

In accordance with the present invention, the problem of providing aninexpensive, convenient, and universal work surface height adjustor thatworks with many existing furniture models is solved by providing as partof the inventive height adjustor an adapter bracket especially designedfor compatibility with the particular model of furniture for which worksurface height adjustment is desired. Further, other embodiments of theheight adjustor apparatus are designed to similarly connect to a wall orother convenient fixed surface.

In a preferred embodiment of the present invention, the adapter brackethas two sides, one for interconnection to the furniture (or wall, orother fixed surface) and the other side for interconnection to atelescoping tube assembly that raises or lowers the work surface bymeans of an electric linear actuator. When connecting to furniture, anadapter bracket is chosen that includes, on the furniture side, variousadapter elements, the precise shape and spacing of which arespecifically designed to fit corresponding slots in the furniture. Whenconnecting to a wall or other fixed element, an adapter bracket ischosen that has suitable holes for the insertion of fasteners, such asscrews, wall anchors, or the like.

The described adjustor can also be adapted to adjust a restaurant table,or a hospital bed, or other adjustable items such as, e.g., an assemblyline or a server rack.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1A shows a horizontal surface height adjustor according to anembodiment of the present invention, mounted on a frame.

FIG. 1B shows a horizontal work surface mounted to a height adjustoraccording to an embodiment of the present invention, in a loweredposition.

FIG. 1C shows a height adjustor according to an embodiment of thepresent invention, extended to a raised position.

FIG. 1D shows a horizontal surface height adjustor according to anembodiment of the present invention, with a work surface suction cupattachment element.

FIG. 1E shows a horizontal surface height adjustor attachment elementfor the work surface suction cup.

FIG. 1F shows an expanded view of the suction cup attachment element.

FIG. 2 shows a height adjustor according to an embodiment of the presentinvention, assembled and ready for mounting on a frame.

FIG. 3 is a partly exploded view of a height adjustor according to anembodiment of the present invention, depicting a telescoping tubing, anadapter bracket, and a cantilever.

FIG. 4A is an exploded view of telescoping tubing according to anembodiment of the present invention, depicting an inner tube, outertube, sleeve, bottom plate, top plate, and actuator motor.

FIG. 4B is an exploded view of the actuator assembly.

FIG. 4C depicts the actuator assembled to top and bottom plates.

FIG. 4D depicts the underside of a work surface with controls andelectrical connections.

FIG. 4E is a perspective view with a horizontal work surface, controlsand electrical connections installed.

FIG. 4F depicts the outside of a sleeve according to an embodiment ofthe present invention.

FIG. 4G depicts the inside of a sleeve according to an embodiment of thepresent invention.

FIG. 4H depicts details of a sleeve, including a flange.

FIG. 4I shows details of slots on the sleeve.

FIG. 5A depicts a bottom perspective view of telescoping tubing andsleeve according to an embodiment of the present invention.

FIG. 5B depicts a top perspective view of telescoping tubing and sleeveaccording to an embodiment of the present invention.

FIG. 6A depicts a perspective view of a cantilever according to anembodiment of the present invention.

FIG. 6B depicts a top view of a cantilever according to an embodiment ofthe present invention.

FIG. 6C depicts a side view of a cantilever according to an embodimentof the present invention.

FIG. 6D depicts a perspective view a suction cup attachment elementhaving a base and a handle.

FIG. 6E depicts a top view of the suction cup attachment element.

FIG. 7A depicts a perspective view of an embodiment of an adapterbracket according to the present invention for use with, e.g., All Steelfurniture.

FIG. 7B depicts a top view of the embodiment of FIG. 7A.

FIG. 7C depicts details of adapters of the embodiment of FIG. 7A.

FIG. 7D depicts details of other adapters of the embodiment of FIG. 7A.

FIG. 7E is an enlarged view of a left-side adapter of the embodiment ofFIG. 7A.

FIG. 7F is an enlarged view of a right-side adapter of the embodiment ofFIG. 7A.

FIG. 7G is an enlarged view of a top right-side adapter of theembodiment of FIG. 7A.

FIG. 8A depicts a perspective view of an embodiment of an adapterbracket according to the present invention for use with, e.g., AOfurniture.

FIG. 8B depicts a top view of the embodiment of FIG. 8A.

FIG. 8C depicts details of adapters of the embodiment of FIG. 8A.

FIG. 8D depicts details of other adapters of the embodiment of FIG. 8A.

FIG. 9A depicts a perspective view of an embodiment of an adapterbracket according to the present invention for use with, e.g. Compaticofurniture.

FIG. 9B depicts a top view of the embodiment of FIG. 9A.

FIG. 9C depicts details of adapters of the embodiment of FIG. 9A.

FIG. 9D depicts details of other adapters of the embodiment of FIG. 9A.

FIG. 9E is an enlarged view of certain adapters of the embodiment ofFIG. 9A.

FIG. 10A depicts a perspective view of an embodiment of an adapterbracket according to the present invention for use with, e.g., EthosSpace furniture.

FIG. 10B depicts a top view of the embodiment of FIG. 10A.

FIG. 10C depicts details of adapters of the embodiment of FIG. 10A.

FIG. 10D depicts details of other adapters of the embodiment of FIG.10A.

FIG. 10E is an enlarged view of certain adapters of the embodiment ofFIG. 10A.

FIG. 10F is an enlarged view of an adapter of the embodiment of FIG. 10A

FIG. 11A depicts a perspective view of an embodiment of an adapterbracket according to the present invention for use with, e.g., KnollDividends furniture.

FIG. 11B depicts a top view of the embodiment of FIG. 11A.

FIG. 11C depicts details of adapters of the embodiment of FIG. 11A.

FIG. 11D depicts details of other adapters of the embodiment of FIG.11A.

FIG. 11E is an enlarged view of certain adapters of the embodiment ofFIG. 11A.

FIG. 12A depicts a perspective view of an embodiment of an adapterbracket according to the present invention for use with, e.g., sidemounting.

FIG. 12B depicts a top view of the embodiment of FIG. 12A.

FIG. 12C depicts details of adapters of the embodiment of FIG. 12A.

FIG. 12D depicts details of other adapters of the embodiment of FIG.12A.

FIG. 13A depicts a perspective view of an embodiment of an adapterbracket according to the present invention for use with, e.g., SteelCase furniture.

FIG. 13B depicts a top view of the embodiment of FIG. 13A.

FIG. 13C depicts details of adapters of the embodiment of FIG. 13A.

FIG. 13D depicts details of other adapters of the embodiment of FIG.13A.

FIG. 13E is an enlarged view of certain adapters of the embodiment ofFIG. 13A.

FIG. 13F is an enlarged view of an adapter of the embodiment of FIG.13A.

FIG. 14A depicts a perspective view of an embodiment of an adapterbracket according to the present invention for use with, e.g., wallmounting.

FIG. 14B depicts a top view of the embodiment of FIG. 14A.

FIG. 14C depicts a side view of the embodiment of FIG. 14A.

FIG. 14D depicts details of adapters of the embodiment of FIG. 14A.

FIG. 14E depicts details of other adapters of the embodiment of FIG.14A.

FIG. 15A depicts a perspective view of an embodiment of an adapterbracket according to the present invention for use with, e.g., Techionfurniture.

FIG. 15B depicts a top view of the embodiment of FIG. 15A.

FIG. 15C depicts details of adapters of the embodiment of FIG. 15A.

FIG. 15D depicts details of other adapters of the embodiment of FIG.15A.

FIG. 16A depicts a perspective view of an embodiment of a universaladapter bracket according to the present invention.

FIG. 16B depicts a top view of the embodiment of FIG. 16A.

FIG. 16C depicts details of adapters of the embodiment of FIG. 16A.

FIG. 16D depicts details of other adapters of the embodiment of FIG.16A.

FIG. 16E is an enlarged view of certain adapters of the embodiment ofFIG. 16A.

FIG. 16F depicts a perspective view of an embodiment of anotheruniversal adapter bracket according to the present invention.

FIG. 16G depicts a top view of the embodiment of FIG. 16F in a flatconfiguration and prior to bending.

FIG. 16H depicts a cross-sectional view of the embodiment of FIG. 16F.

FIG. 16I depicts a top view of an embodiment of another universaladapter bracket in a flat configuration according to the presentinvention.

FIG. 16J depicts a top view of an embodiment of another universaladapter bracket in a flat configuration according to the presentinvention.

FIG. 17A depicts a top view of another embodiment of an adapter bracketof the present invention.

FIG. 17B depicts details of adapters of the embodiment of FIG. 17A.

FIG. 17C depicts details of other adapters of the embodiment of FIG.17A.

FIG. 18 shows an outer tube with integrally formed adapter bracket.

FIG. 19 shows an exploded view of an outer tube with integrally formedadapter bracket.

FIG. 20 shows a horizontal surface height adjustor according to anotherembodiment of the present invention, mounted on a frame.

FIG. 21A is a partly exploded view of a height adjustor according to anembodiment of the present invention, depicting telescoping tubing, anglebrackets, and connecting plates.

FIG. 21B is a detailed view depicting the alignment of screw holes in anangle bracket with corresponding holes in a connecting plate.

FIG. 22A depicts a perspective view of an embodiment of a universalangle bracket according to the present invention.

FIG. 22B depicts the adapter side of the embodiment of FIG. 22A.

FIG. 22C depicts details of adapters of the embodiment of FIG. 22A.

FIG. 22D depicts details of other adapters of the embodiment of FIG.22A.

FIG. 23A depicts a perspective view of a embodiment of an angle bracketaccording to the present invention for use with, e.g., All Steelfurniture.

FIG. 23B depicts the adapter side of the embodiment of FIG. 23A.

FIG. 23C depicts details of adapters of the embodiment of FIG. 23A.

FIG. 23D depicts details of other adapters of the embodiment of FIG.23A.

FIG. 24A depicts a perspective view of an embodiment of an angle bracketaccording to the present invention for use with, e.g, AO furniture.

FIG. 24B depicts the adapter side of the embodiment of FIG. 24A.

FIG. 24C depicts details of adapters of the embodiment of FIG. 24A.

FIG. 24C depicts details of other adapters of the embodiment of FIG.24A.

FIG. 24E depicts a cross-section of the angle bracket embodiment of FIG.24A.

FIG. 25A depicts a perspective view of an embodiment of an angle bracketaccording to the present invention for use with, e.g, Compaticofurniture.

FIG. 25B depicts the adapter side of the embodiment of FIG. 25A.

FIG. 25C depicts details of an adapter of the embodiment of FIG. 25A.

FIG. 25D depicts details of other adapters of the embodiment of FIG.25A.

FIG. 26A depicts a perspective view of an embodiment of an angle bracketaccording to the present invention for use with, e.g, Ethos Spacefurniture.

FIG. 26B depicts the adapter side of the embodiment of FIG. 26A.

FIG. 26C depicts details of adapters of the embodiment of FIG. 26A.

FIG. 26D depicts details of other adapters of the embodiment of FIG.26A.

FIG. 27A depicts a perspective view of an embodiment of an angle bracketaccording to the present invention for use with, e.g., Knoll Dividendsfurniture.

FIG. 27B depicts the adapter side of the embodiment of FIG. 27A.

FIG. 27C depicts details of an adapter of the embodiment of FIG. 27A.

FIG. 27D depicts details of other adapters of the embodiment of FIG.27A.

FIG. 28A depicts a perspective view of an embodiment of an angle bracketaccording to the present invention for use with, e.g., Steel Casefurniture.

FIG. 28B depicts the adapter side of the embodiment of FIG. 28A.

FIG. 28C depicts details of an adapter of the embodiment of FIG. 28A.

FIG. 28D depicts details of other adapters of the embodiment of FIG.28D.

FIG. 29A depicts a perspective view of an embodiment of an angle bracketaccording to the present invention for use with, e.g., Techionfurniture.

FIG. 29B depicts the adapter side of the embodiment of FIG. 29A.

FIG. 29C depicts details of adapters of the embodiment of FIG. 29A.

FIG. 29D depicts details of other adapters of the embodiment of FIG.29A.

DETAILED DESCRIPTION OF THE INVENTION

In the various figures, the same references denote identical or similarelements.

FIGS. 1A-1C depict an embodiment 20 of the work surface height adjustingapparatus of the present invention, mounted to a frame 12. Frame 12 canbe, for example, a panel frame or other component of a modular furnituresystem or office cubicle system. Frame 12 can be a frame of a desk orwork station. Alternatively, rather than being mounted to a frame, worksurface adjusting apparatus 20 can be mounted to a wall or other fixedsurface, or secured to a footing or to a floor.

In the embodiment shown in FIG. 1B, cantilever elements 24 attach to andsupport the work surface or desktop. Cantilever elements 24 thus causethe work surface or desktop to be raised or lowered as the innerportions of telescoping tubes (legs) 22 move up or down, respectively.It will be apparent to one skilled in the art that other types oflifting columns or lifting mechanisms can be used to raise and lower thework surface, in addition to telescoping tubes. For example, a screwjack or hydraulic jack can be used. Lifting columns or liftingmechanisms can be manual or power-driven. Cantilever elements 24 may befastened to the work surface using, preferably, wood screws or sheetmetal screws. Preferably, where a previously fixed-height desktop isbeing retrofitted to an adjustable configuration, these are the samescrews previously used to secure the desktop to a fixed element, such asa bracket fixedly attached to the frame or other portion of the desk orfurniture system.

In the embodiment shown in FIGS. 1A-1C, there are 2 telescoping tubeassemblies 22 (also referred to as “legs”). In another embodiment (notshown), there is a single leg. This might be suitable for use with,e.g., a smaller work surface. In other embodiments, there can be morethan 2 legs. For example, there can be 4 legs. When 2 or moretelescoping tube assemblies are used, each preferably has its own linearactuator (discussed below) and these are preferably synchronized througha control unit, so that each lifts or lowers the work surface by thesame amount and at the same rate.

FIG. 1B depicts a work surface mounted on cantilever elements 24 in alowered position, and FIG. 1C depicts work surface height adjustingapparatus 20 with telescoping tube assemblies 22 fully extended, and thework surface in a correspondingly high position. It will be appreciatedthat, by means of work surface height adjusting apparatus 20, the worksurface can be brought to any desired intermediate position, as well.Preferably, work surface height adjusting apparatus 20 supports a worksurface height in a fully raised position that will allow a tall personto work comfortably while standing. Preferably, work surface heightadjusting apparatus 20 supports a work surface height of about 42″-48″in a fully raised position. Preferably, work surface height adjustingapparatus 20 supports a work surface height of about 28″-30″ in a fullylowered position.

FIG. 1D depicts a work surface height adjusting apparatus 20 withsuction cup elements 24 a for the attachment of the work surface. Itwill be appreciated that, by means of suction cup attachment of a worksurface to the work surface height adjusting apparatus 20 there will beno tools needed for set up. The work surface height adjusting apparatus20 can be attached and/or detached from any work surface simply by usingthe suction cups attachment, without a need for screws or drills tosecurely fasten the work surface. FIG. 1E depicts the screw suction cupattachment element 24 b. The screw attachment element 24 b is attachedto the cantilever 24. The suction cup elements 24 a can be attached tothe work surface height adjusting apparatus 20 by the screw attachmentelement 24 b. The suction cup elements 24 a are installed by simplyattaching onto the screw 24 b and tightening by hand.

FIG. 2 depicts some of the principal components of a preferredembodiment of a work surface height adjustment apparatus 20, assembledand ready for mounting on frame 12. As shown, adapter bracket 26includes a plurality of adapters 27 disposed along the side of adapterbracket 26 that faces frame 12. In the embodiment shown in FIG. 2, theadapters 27 are generally hook-shaped. Frame 12 comprises an array ofslots 28 corresponding to adapters 27, which receive adapters 27 whenapparatus 20 is mounted to frame 12. As discussed in further detailbelow, a wide variety of embodiments of adapter bracket 26 arecontemplated, with various configurations of adapters and otherfastening elements or mechanisms, to permit attachment of apparatus 20to various desks and other furniture, as well as to fixed elements, suchas walls. In some embodiments, adapters 27 are generally hook-shaped andmay be referred to as “hooks.” In other embodiments, adapters 27 mayassume other shapes as understood by a person of ordinary skill in theart.

As shown in FIG. 3, adapter bracket 26 also includes a row of adapters29 along the other side of bracket 26, for attachment to telescopingtube 22. In contrast to adapters 27, which vary in size, number,spacing, shape, or other characteristics, depending on the specific deskor other component to which the height adjustment apparatus is attached,adapters 29 are of a standard size, number, spacing, and shape, forattachment to telescoping tube 22 of the present embodiment. In apreferred embodiment, adapters 29 are generally hook-shaped. In apreferred embodiment, each bracket 26 includes about 18 adapters 29.Alternatively, adapter bracket 26 may attach to telescoping tube 22 byother means. Preferably adapter bracket 26 attaches to telescoping tube22 by a mechanism that facilitates quick assembly and disassembly. Aperson of ordinary skill in the art will readily understand that theembodiments of the present invention include detachable adapters 29 andfixed adapters 29 that are permanently connected to the sleeve of thetelescoping tube 22.

FIG. 4A depicts a parts-separated, exploded view, of the telescopingtubing 22 assembly that includes an inner tube 32, outer tube 34, sleeve36, bottom plate 44, top plate 42, and actuator 46. In a preferredembodiment, inner tube 32 has the general form of a right rectangularprism, open at the top and bottom. Preferably, inner tube 32 is about25″ high, 6½″ wide, and 3½″ deep. Preferably, outer tube 34 is ofsimilar shape and configuration but is dimensioned slightly larger sothat inner tube 32 fits inside outer tube 34. It will be understood thatinner tube 32 and outer tube 34 may assume other (e.g. non-rectangular)shapes and configurations, so long as inner tube 32 fits within and canmove readily with respect to outer tube 34.

In a preferred embodiment, sleeve 36 includes a U-shaped cross-section,and has an open side that preferably fits over outer tube 34. Sleeve 36preferably includes a plurality of slots 37 that receive adapters 29from one side of adapter bracket 26. As shown in detail in FIGS. 4F, 4G,4H, and 4I, sleeve 36 preferably includes 2 arrays 37 and 39 of slots,one preferably along each corner of the sleeve 36. This permits sleeve36 to serve as part of either a right leg or as part of a left leg. Asshown in FIGS. 4F, 4G, and 4H, sleeve 36 in one embodiment includesflanges 38 at the top and bottom of the sleeve. Each of flanges 38 isbent over to preferably provide a separation of about ½″ between sleeve36 and outer tube 34 to allow adequate room for the insertion of hooks27 into slots 37 or slots 39. Preferably, each of slots 35 (see FIG. 4I)is about ⅝″ long, and the distance between slots is about ⅜″. In apreferred embodiment, sleeve 36 is permanently welded to outer tube 34.Alternatively, as would be understood by a person of skill in the art,sleeve 36 can be secured to outer tube 34 by bolting or by other means.

As shown in FIG. 5B, top plate 42 is connected to inner tube 32. In apreferred embodiment, top plate 42 is welded to inner tube 32. Top plate42 is also preferably connected to cantilever 24. In a preferredembodiment, as shown in FIG. 5B, top plate 42 includes a u-shapedopening 45 at one end as shown and a number of holes 47 (preferably 6holes) to facilitate the use of fasteners to connect top plate 42 tocantilever 24.

Bottom plate 44 connects to outer tube 34. In a preferred embodiment, asshown in FIG. 5A, bottom plate 44 includes 2 holes 49 to accommodatefasteners and a single larger hole, preferably circular in shape. In anembodiment, bottom plate 44 is welded to the bottom of outer tube 34.

For successful operation, preferably the space between the inner andouter tube is carefully controlled, to avoid jamming or excess wear, onthe one hand, or instability or wobbling, on the other hand.Accordingly, plastic spacer parts or “glides” 49 a and 49 b (see FIG.4A) serve to maintain the desired spacing between elements of thetelescoping tube assembly.

In other embodiments, telescoping tubes of circular or ellipticalcross-section, or other cross-sectional shapes, are contemplated. In apreferred embodiment, the inner and outer tubes are each fabricated of14 gauge steel.

Actuator 46 may be an electric linear actuator, such as one manufacturedby Linak U.S., Inc., of Louisville, Ky. As shown in FIG. 4B, in oneembodiment, actuator 46 connects to top plate 42 via top bracket 47 andactuator 46 connects to bottom plate 44 via bottom bracket 48.

As shown in FIGS. 4D and 4E, control 43 and control box 45 for actuators46 are preferably located on the bottom of the work surface. Control 43can be a button, knob, touch screen, or any other control mechanismsuitable for actuation by a human. A wire extends from control 43 tocontrol box 45. In another embodiment, control 43 communicates withcontrol box 45 wirelessly. In a preferred embodiment, each telescopingtube assembly 22 has its own linear actuator, and the linear actuatorsare synchronized by the controls, so that, for example, each one movesthe same amount up or down, and at the same rate, as the other(s). In apreferred embodiment, a single control box 45 is connected to 2telescoping tube assemblies 22, and control box 45 is also connected toa power outlet, as shown in FIGS. 4D and 4E.

In a preferred embodiment, control 43 includes an up or down arrowbutton, and the work surface height is adjusted up and down by pushingthe up or down arrow-button. The work surface continues to move as longas the arrow-button is depressed and the motion stops when thearrow-button is released.

FIG. 5A depicts a bottom perspective view of fully assembled telescopingtube assembly 22, showing bottom plate 44 connected to the bottom ofouter tube 34. FIG. 5B is a top perspective view of fully assembledtelescoping tube assembly 22, showing top plate 42 connecting to the topof inner tube 32. Preferably top plate 42 is welded to the top of innertube 32 and bottom plate 44 is welded to the bottom of outer tube 34.

FIG. 6A is a perspective view of an exemplary embodiment of cantileverelement 24. FIGS. 6B and 6C are respectively top and side views ofcantilever element 24. As described above in connection with FIGS.1A-1C, each cantilever element 24 connects to the top of an inner tube32, and also to the desktop or work surface. The cantilever elements 24have the function of supporting the desktop or work surface as it israised or lowered. The cantilever element 24 as depicted is onlyexemplary. In particular, the dimensions and placement of the holesshown in the left and right sides of cantilever element 24 will varydepending on the type of desktop or work surface or other surface to besupported and the fastening or attachment arrangements supported by therespective desktop or work surface. In a preferred embodiment, there are3 holes on the left side and 3 holes on the right side of cantileverelement 24. In contrast, the holes shown as formed in the centralportion of cantilever element 24 are of a fixed configuration, as thesematch corresponding holes in top plate 42, which as noted is connected(preferably welded to) inner tube 32. In a preferred embodiment, theoverall length of cantilever element 24 is about 22″.

In another example and as described above in connection with FIGS.1D-1E, the cantilever arm 24 can attach to the work surface by means ofsuction cups 24 a. Referring to FIGS. 6D-6E, the suction cup 24 aincludes a base 242 and a handle 243. The suction cup attachmentelements 24 a may have a base diameter that is 4.625″ and a basethickness of 0.25″. Furthermore, in a preferred example the overallheight of the suction cup 24 a, not including the handle 243, is 4.5″with an overall height of 2.625″ when compressed. The handle 243 may be3″ in length and may vary in thickness from 0.25″ to 0.625″. The suctioncup attachment elements 24 a may include a handle 243 that is made fromABS Plastic and a base 242 that is made from PVC Plastic or Neoprene;however, it should be appreciated that a number of different materialsmay be used.

To mount a preferred embodiment of the work surface adjusting apparatus20 on the frame, the user or installer would proceed as follows: 1)Attach the adapter bracket to the work station frame by inserting themale hooks, facing downwards, into work station female slots; 2) Hangthe lifting column on the adapter bracket by sliding the column femaleslots over the bracket male hooks that face upwards; and 3) Attach thecantilever arm with screws going through the 4 holes on the insidebottom of the arm and into the 4 holes at the top of the lifting column.

FIGS. 7A-16E depict various embodiments of adapter bracket 26. Adapterbracket 26 attaches the telescoping tube assemblies 22 (legs) to avariety of furniture systems or fixed surfaces. As already discussed,one side of adapter bracket 26 preferably has a fixed configuration ofadapters or hooks 29 for attachment to telescoping tube 22. In thediscussion of FIGS. 7A-16E below, this corresponds to the left side ofadapter bracket 26. As discussed, the other side (furniture side) variesdepending on the type of furniture to which the apparatus is to beattached. In FIGS. 7A-16E, this corresponds to the right side of adapterbracket 26.

In a preferred embodiment, the overall length of adapter bracket 26 isabout 17 to 20 inches. Preferably, a length is provided that allows roomfor enough adapters to lend sufficient strength and stability to theinterconnection of the height adjusting apparatus and the furniture (orwall). In a preferred embodiment, adapter bracket 26 is about 1″ wide.In another embodiment, adapter bracket 26 is about 2½″ wide.

Preferably, the shape of the top right-side adapter of adapter bracket26 includes an upward protrusion to prevent the bracket from beingeasily dislodged, e.g., for safety reasons. The distance by which thetop adapter protrudes above the top of the adapter bracket is in therange of about ⅛″ to ⅜″.

Various exemplary embodiments of adapter bracket 26 will now bedescribed in detail, in a manner facilitating making specificembodiments of adapter bracket 26 by cutting from hot rolled steel (orcold rolled steel, or other metal) using a computer numeric control(cnc) tool or the like.

All Steel Adapter Bracket (FIGS. 7A-G).

In one embodiment, as shown in FIG. 7A, 17 right-side adapters 27 a areof an identical, generally hook-shaped configuration. A single topmostright-side adapter 27 b, includes an upward protrusion to guard againstdislodgement. As shown in detail in FIGS. 7C and 7D, the bracketpreferably further includes a notch opposite each right-side adapter 27a or 27 b. Preferably, as shown in detail in FIGS. 7F and 7G, eachright-side adapter 27 a or 27 b includes a curved leading edge.

Described below are the dimensions of a preferred embodiment of an AllSteel adapter bracket. Angles and distances are exemplary. In otherembodiments, more or fewer adapters of differing dimensions and shapemay be provided.

Bracket Core: Bracket is cnc-cut hot rolled steel; 18¼″ in length, 11/16″ in width. 5/64″ depth.

Left Side Male Adapters: 18 male adapters, spaced at 1 inch. All maleadapters identical. First adapter begins extending from bottom of core.⅜″ to smoothed 90° angle right, ½″ to smoothed 90° angle right, ¼″ tosmoothed 90° angle right, ¼″ to 90° angle left, ⅛″ to core. Final maleadapter ends 1″ from smoothed 90° angle.

Right Side Male Adapters: 18 male adapters, spaced at 1″. 17 areidentical. Final adapter at top is unique. Smoothed 90° angle left, ⅝″to 45° angle left, 1/16″ to 45° angle right, 5/16″ to 90° angle right,⅛″ to 90° angle right, 3/16″ to smoothed 90° angle left, ⅛″ to smoothed45° angle left, 3/16″ to 45° angle left, then ¼″ to smoothed 90° angleleft. ⅜″ to core. Final adapter at top is unique. From previousadapter's end, ⅝″ to 45° angle left, 1/16″ to 45° angle right, 5/16″ to90° angle right, ⅛″ to 90° angle right, 3/16″ to smoothed 90° angleleft, ⅛″ to smoothed 45° angle left. 3/16″ to smoothed 45° angle left,25/64″ to 45° left. ⅜″ to 90° right. Extend to level with top edge.

AO Adapter Bracket (FIGS. 8A-8D).

In another embodiment, as shown in FIG. 8A, 14 right-side adapters 27 dare identical and of a generally hook-shaped configuration. Thebottommost 2 adapters 27 c are tab-shaped, and the topmost adapter 27 ehas an upward protrusion to guard against dislodgement. See detailedviews of preferred adapter shapes in FIGS. 8C and 8D. Preferably, thereis an elongated space between the topmost tab-shaped adapter 27 c andthe first hook-shaped adapter 27 d. Preferably, this space or gap isabout 1½ long. In an embodiment, adapter bracket 26 preferably is bentalong a line parallel to the longitudinal axis of adapter bracket 26,giving adapter bracket 26 a generally v-shaped cross-section. In apreferred embodiment, the bend line is about ⅛″ from the right side ofadapter bracket 26 and about ⅞″ from the left side of adapter bracket26, resulting in an asymmetrical v-shaped cross-section, with one sideof the “v” longer than the other side. Preferably, the measure of thedihedral angle between the two sides is about 125°.

Described below are the dimensions of a preferred embodiment of an AOadapter bracket. Angles and distances are exemplary. In otherembodiments, more or fewer adapters of differing dimensions and shapemay be provided. In a preferred embodiment, an AO adapter bracket coreincludes an angle of approximately 125° between a larger left sideportion (width approximately ⅞″) and a smaller right side portion (widthapproximately ⅛″). This angled configuration is desirable in order tomeet the unique configuration of AO furniture.

Bracket Core: Bracket is cnc-cut hot rolled steel; 18¼″ in length, 1″ inwidth. 5/64″ depth. ⅞″ from left edge of core, core angles at 125° forremaining ⅛″ of width.

Left Side Male Adapters: 18 male adapters, spaced at 1 inch. All maleadapters identical. First adapter begins extending from bottom of core.⅜″ to smoothed 90° angle right, ½″ to smoothed 90° angle right, ¼″ tosmoothed 90° angle right, ¼″ to 90° angle left, ⅛″ to core. Final maleadapter ends 1″ from smoothed 90° angle.

Right Side Male Adapters: 17 male adapters, first two and last adaptersfrom bottom are unique. From bottom right smoothed 90° angle left,13/16″ to 90° angle right. ⅜″ to smoothed 90° angle left. 7/16″ tosmoothed 90° angle left. ⅜″ to 90° angle right at core. 9/16″ to nextadapter, 90° angle right. ⅜″ to smoothed 90° angle left, then 7/16″ tosmoothed 90° angle left. ⅜″ to 90° angle right at core. 1 9/16″ tosmoothed 90° angle right. 3/32″ to smoothed 90° angle right. 3/16″ to90° angle left. 9/32″ to smoothed 90° angle left. ⅝″ to smoothed 90°angle left, then ⅜″ to 90° angle right at core, 13 identical adaptersfollow, spaced at 1″ from end to end. The last adapter at top, beginningfrom end of previous adapter: 1 9/16″ to smoothed 90° angle right. 3/32″to smoothed 90° angle right. ⅛″ to 90° angle left, then 9/32″ tosmoothed 90° angle left. 11/16″ to smoothed 90° angle left, then 9/32″to smoothed 90° angle left. ⅛″ to 90° angle right, then 7/32″ to corebend.

Compatico Adapter Bracket (FIGS. 9A-E).

In still another embodiment, as shown in FIGS. 9A and 9B, 17 right-sideadapters 27 g are of an identical, generally hooked-shapedconfiguration. A single topmost adapter 27 f is of different shape,having an upward protrusion to guard against dislodgement. In anembodiment, each right-side adapter 27 g and 27 f includes a straightleading edge. See FIGS. 9C-9E for details of adapter shapes.

Described below are the dimensions of a preferred embodiment of aCompatico adapter bracket. Angles and distances are exemplary. In otherembodiments, more or fewer adapters of differing dimensions and shapemay be provided.

Bracket Core: Bracket is cnc-cut hot rolled steel; 18¼″ in length, 1″ inwidth. 5/64″ depth.

Left Side Male Adapters: 18 male adapters, spaced at 1 inch. All maleadapters identical. First adapter begins extending from bottom of core.⅜″ to smoothed 90° angle right, ½″ to smoothed 90° angle right, ¼″ tosmoothed 90° angle right, ¼″ to 90° angle left, ⅛″ to core. Final maleadapter ends 1″ from smoothed 90° angle.

Right Side Male Adapters: 18 male adapters, spaced 1″ from end to end.First 17 adapters from bottom are identical. From bottom right smoothed90° angle left, 1″ to 90° angle right, then ⅛″ to 90° angle right. 5/16″to smoothed 90° angle left, then 9/32″ to smoothed 90° angle left. 7/16″to 45° angle left. 11/64″ to 45° angle left. 9/32″ to 90° angle right atcore. Last male adapter, from end of previous adapter: ¾″ to 90° angleright. ⅛″ to 90° angle right. ¼″ to smoothed 90° angle left, then 9/32″to smoothed 90° angle left. ⅝″ to 45° angle left, then 11/64″ to 45°angle left. 5/32″ to smoothed 90° angle left. ⅛″ to core, then extend ⅛″to top edge.

Ethos Space Adapter Bracket (FIGS. 10A-F).

In still another embodiment, as shown in FIGS. 10A and 10B, 14right-side adapters 27 i are identical and of a generally hook-shapedconfiguration. Topmost adapter 27 h has an upward protrusion to guardagainst dislodgement. Further, in this embodiment, bottommost 2 adapters27 j face the opposite way (hook directed up) from the other adapters.See enlarged views of each adapter shape in FIGS. 10C-10F.

Described below are the dimensions of a preferred embodiment of an EthosSpace adapter bracket. Angles and distances are exemplary. In otherembodiments, more or fewer adapters of differing dimensions and shapemay be provided.

Bracket Core: Bracket is cnc-cut hot rolled steel; 17 13/32″ in length,1″ in width. 5/64″ depth.

Left Side Male Adapters: 18 male adapters, spaced at 1 inch. All maleadapters identical. First adapter begins extending from bottom of core.⅜″ to smoothed 90° angle right, ½″ to smoothed 90° angle right, ¼″ tosmoothed 90° angle right, ¼″ to 90° angle left, ⅛″ to core. Final maleadapter ends 5/32″ from smoothed 90° angle.

Right Side Male Adapters: 17 male adapters; 14 identical and 3 mutuallyunique. Extend 11/32″ from bottom edge of core to smoothed 90° angleleft. 13/32″ to smoothed 90° angle left, then 7/32″ to 90° angle left.3/32″ to smoothed 90° angle right, then ⅛″ to smoothed 90° angle rightat core. 11/16″ to second adapter, 90° angle right. 11/32″ to smoothed90° angle left, then 11/32″ to smoothed 90° angle left. ¼″ to 90° angleleft. 3/32″ to smoothed 90° angle right, then ⅛″ to smoothed 90° angleright at core. 1 23/32″ to third adapter, smoothed 90° angle right.3/32″ to smoothed 90° angle right, then 3/16″ to 90° angle left. ¼″ tosmoothed 90° angle left, then ⅝″ to smoothed 90° angle left. ¼″ to 90°angle left. 3/32″ to smoothed 90° angle right, then 3/32″ to smoothed90° angle right at core. Repeat adapter 13 times, spaced at 1″ from endto end. Last adapter at top begins 21/32″ from end of previous adapter,as smoothed 90° angle right. 3/32″ to smoothed 90° angle right, then3/16″ to 90° angle left. ¼″ to smoothed 90° angle left, then ⅞″ tosmoothed 90° angle left. ¼″ to smoothed 90° angle left. ¼″ to smoothed90° angle right, then 3/32″ to smoothed 90° angle right at core.

Knoll Dividends Adapter Bracket (FIGS. 11A-11E).

In still another embodiment, as shown in FIGS. 11A and 11B, the topmostadapter 27 k has an upward protrusion to guard against dislodgement. Theother right-side adapters are grouped in groups of two, with a spacehaving no adapters in between groups. The spacing between adapterswithin each group of two adapters 271 (measured from the top of oneadapter 271 to the top of the next adapter 271) is about 1½″. The gapbetween two-adapter groups is about 3″, measured from the top of theadapter 271 on one side of the gap to the top of the adapter 271 on theother side of the gap. Adapters 271 are generally T-shaped, as may beseen in the detailed views of FIGS. 11C-E.

Described below are the dimensions of a preferred embodiment of a KollDividends adapter bracket. Angles and distances are exemplary. In otherembodiments, more or fewer adapters of differing dimensions and shapemay be provided.

Bracket Core: Bracket is cnc-cut hot rolled steel; 18¼″ in length, 1″ inwidth. 5/64″ depth.

Left Side Male Adapters: 18 male adapters, spaced at 1 inch. All maleadapters identical. First adapter begins extending from bottom of core.⅜″ to smoothed 90° angle right, ½″ to smoothed 90° angle right, ¼″ tosmoothed 90° angle right, ¼″ to 90° angle left, ⅛″ to core. Final maleadapter ends 1″ from smoothed 90° angle.

Right Side Male Adapters: 9 male adapters; 8 identical, 1 unique. All 9adapters are preceded by a shallow recess. Smoothed 90° angle at bottomleft corner. 15/16″ space to recess: 45° angle left. 1/16″ to 142° angleleft, then ¼″ to 83° angle right. 5/32″ to 90° angle right, then 7/32″to smoothed 90° angle left. 5/16″ to smoothed 90° angle left, then ⅝″ tosmoothed 90° angle left. 5/16″ to smoothed 90° angle left, then ⅛″ to90° angle right. 3/32″ to 90° right at core. Repeat recess and adapter15/16″ from end. From end of adapter pair, instead of 15/16″ space,distance is 2 7/16″ to next recess and adapter pair (otherwise, as perprevious paragraph beginning with recess). 4 pairs of recesses andadapters, in total. At end of final pair's adapter: 15/16″ space torecess: 45° angle left. 1/16″ to 142° angle left, then ¼″ to 83° angleright. 5/32″ to 90° angle right, then 7/32″ to smoothed 90° angle left.⅛″ to smoothed 45° angle left for 5/16″. 45° angle left, then ⅝″ tosmoothed 90° angle left. 5/16″ to smoothed 90° angle left, then 5/16″ to90° right. 3/32″ to 90° angle right, then ⅛″ to 90° angle left, levelwith top edge of core.

Side Mounted Adapter Bracket (FIGS. 12A-12D).

In still another embodiment there are no right-side adapters. The topand bottom corners are 90° angles. Holes are provided through theadapter to accommodate fasteners.

Described below are the dimensions of a preferred embodiment of sidemounted adapter bracket. Angles and distances are exemplary. In otherembodiments differing dimensions and shapes may be provided.

Bracket Core: Bracket is cnc-cut hot rolled steel; 19″ in length, 2½″ inwidth. 5/64″ depth. 2 holes are located on the core. The first hole islocated 3¼″ from the bottom edge, and the second is located 3⅛″ from thetop edge. The holes are ⅜″ in diameter, with centers set at ¾″ from theright side edge.

Left Side Male Adapters: 18 male adapters, spaced at 1 inch. All maleadapters identical. First adapter begins extending from bottom of core.⅜″ to smoothed 90° angle right, ½″ to smoothed 90° angle right, ¼″ tosmoothed 90° angle right, ¼″ to 90° angle left, ⅛″ to core. Final maleadapter ends 1¾″ from smoothed 90° angle.

Right Side Male Adapters: There are no right-side adapters on the SideMounted bracket. The bottom and top right corners are 90° angles

Steel Case Adapter Bracket (FIGS. 13A-13F).

In still another embodiment, as shown in FIGS. 13A and 13B, topmostadapter 27 m has an upward protrusion to guard against dislodgement, andbottommost adapter 27 o is L-shaped. The other adapters (adapters 27 n,preferably 8 in number) are generally hook-shaped, with a slant leadingedge. The shapes of the various adapters are shown in detail in FIGS.13C-F. The slant-edged adapters 27 n are grouped together in the upperhalf of bracket 26, and there is a gap having no adapters extending fromthe bottommost of the slant-edged adapters to the L-shaped adapter. Thegap is about 9″ in length.

Described below are the dimensions of a preferred embodiment of a SteelCase adapter bracket. Angles and distances are exemplary. In otherembodiments, more or fewer adapters of differing dimensions and shapemay be provided.

Bracket Core: Bracket is cnc-cut hot rolled steel; 18¼″ in length, 1″ inwidth. 5/64″ depth.

Left Side Male Adapters: 18 male adapters, spaced at 1 inch. All maleadapters identical. First adapter begins extending from bottom of core.⅜″ to smoothed 90° angle right, ½″ to smoothed 90° angle right, ¼″ tosmoothed 90° angle right, ¼″ to 90° angle left, ⅛″ to core. Final maleadapter ends 1″ from smoothed 90° angle.

Right Side Male Adapters: 10 male adapters; 8 identical, 2 mutuallyunique. Smoothed 90° angle left at bottom right edge. 1″ to 90° angleright, then 3/16″ to 90° angle right. 5/16″ to 90° angle left, then ¼″to 90° angle left. 9/16″ to 90° angle left, then 7/16″ to 90° angleright at core. From end of first adapter, 2¼″ to recess: 90° angle left,then ⅛″ to 90° angle right. 6 15/16″ to next adapter. 90° angle right,then 7/32″ to 90° angle right. 7/32″ to 63° angle left, then 11/32″ to100° angle left. 21/64″ to 107° angle left. 7/16″ to 90° angle right.Repeat adapter 7 times, spaced at 1″ from end to end. Last adapter, fromend of previous adapter: ¾″ to 90° angle right, then 7/32″ to 90° angleright. 7/32″ to 63° angle left, then 11/32″ to 110° angle left. 25/32″to 97° angle left, then 7/32″ to 90° angle left. ⅜″ to 90° angle right,then 15/32″ to 90° angle left. 3/16″ to 90° angle right at top edge.

Wall Mounted Adapter Bracket (FIGS. 14A-14E).

In still another embodiment, as shown in FIGS. 14A-C, bracket 26 has auniform series of hook-shaped adapters on one side, no adapters on theother side, and a bend between the two sides. Preferably, the bend is90°. Preferably, the bend line is 1½″ from one side of the bracket and1″ from the other side.

Described below are the dimensions of a preferred embodiment of a wallmounted adapter bracket. Angles and distances are exemplary. In otherembodiments, differing dimensions and shapes may be provided.

Bracket Core: Bracket is cnc-cut hot rolled steel; 19″ in length, 5/64″depth. From left side edge, 1½″ to 90° bend. From bend, 1″ to right sideedge. A hole is set with center 1½″ from bottom edge of left side. Holeis 5/16″ in diameter, with its center set ¾″ from the left edge. 4identical holes are set 4″ apart from first hole.

Left Side Male Adapters: There are no male adapters on the left side ofthe bracket. The bottom and top corners of the right side are 90°angles.

Right Side Male Adapters: 18 male adapters, spaced at 1 inch. All maleadapters identical. First adapter begins extending from bottom of core.⅜″ from core edge to smoothed 90° angle right, ½″ to smoothed 90° angleright, ¼″ to smoothed 90° angle right, ¼″ to 90° angle left, ⅛″ to core.Final male adapter ends 1¾″ from smoothed 90° angle.

Techion Adapter Bracket (FIGS. 15A-15D).

In still another embodiment 17 right-side adapters 27 q are of anidentical, generally hook-shaped configuration, except for topmostadapter 27 p, which has an upward protrusion to guard againstdislodgement. In an embodiment, the bracket further includes a notchopposite each right-side adapter. In an embodiment, each right-sideadapter includes a curved leading edge. See enlarged views of theadapter shape and notches in FIGS. 15C and 15D.

Described below are the dimensions of a preferred embodiment of aTechion adapter bracket. Angles and distances are exemplary. In otherembodiments, more or fewer adapters of differing dimensions and shapemay be provided.

Bracket Core: Bracket is cnc-cut hot rolled steel; 18¼″ in length, 11/16″ in width. 5/64″ depth.

Left Side Male Adapters: 18 male adapters, spaced at 1 inch. All maleadapters identical. First adapter begins extending from bottom of core.⅜″ to smoothed 90° angle right, ½″ to smoothed 90° angle right, ¼″ tosmoothed 90° angle right, ¼″ to 90° angle left, ⅛″ to core. Final maleadapter ends 1″ from smoothed 90° angle.

Right Side Male Adapters: 18 male adapters, spaced at 1″. 17 areidentical. Final adapter at top is unique. Smoothed 90° angle left, ⅝″to 45° angle left, 1/16″ to 45° angle right, 5/16″ to 90° angle right,⅛″ to 90° angle right, 3/16″ to smoothed 90° angle left, ⅛″ to smoothed45° angle left, 3/16″ to 45° angle left, then ¼″ to smoothed 90° angleleft. ⅜″ to core. Final adapter at top is unique. From previousadapter's end, ⅝″ to 45° angle left, 1/16″ to 45° angle right, 5/16″ to90° angle right, ⅛″ to 90° angle right, 3/16″ to smoothed 90° angleleft, ⅛″ to smoothed 45° angle left. 3/16″ to smoothed 45° angle left.25/64″ to 45° left. ⅜″ to 90° right. Extend to level with top edge.

Universal Adapter Bracket (FIGS. 16A-16E).

In still another embodiment, as shown in FIGS. 16A and 16B, there arepreferably 7 right-side adapters. These include topmost adapter 27 r,which has an upward protrusion to guard against dislodgement, as well as6 generally hook-shaped adapters 27 s. Spacing between successiveadapters 27 r, measured from the top of one adapter 27 r to the top ofthe next adapter 27 r, is about 3″. In an embodiment, the gaps or spacesbetween right-side adapters include 3 divots 25, each divot 25 having amaximum depth of about 1/16″ and a total length of about ½″.

The universal adapter bracket is designed to fit most furniture systemsand work stations. In order to accomplish this, universal adapterbracket provides adapters that accommodate the size, shape, and spacingof slots supported by a wide variety of furniture systems and workstations.

Described below are the dimensions of a preferred embodiment of auniversal adapter bracket. Angles and distances are exemplary. In otherembodiments, more or fewer adapters of differing dimensions and shapemay be provided.

Bracket Core: Bracket is cnc-cut hot rolled steel; 19″ in length, 1″ inwidth. 5/64″ depth.

Left Side Male Adapters: 18 male adapters, spaced at 1 inch. All maleadapters identical. First adapter begins extending from bottom of core.⅜″ to smoothed 90° angle right, ½″ to smoothed 90° angle right, ¼″ tosmoothed 90° angle right, ¼″ to 90° angle left, ⅛″ to core. Final maleadapter ends 1¾″ from smoothed 90° angle.

Right Side Male Adapters: 7 male adapters; 6 identical, 1 unique.Smoothed 90° angle left. ¼″ to divot: smoothed recess with equal slopes⅛″ from start and ⅛″ from end, with maximum depth of 1/16″. Total lengthof divot: ½″. At end of first divot, first adapter begins immediately.⅛″ to 90° angle right, then ⅛″ to smoothed 90° angle left. ¼″ tosmoothed 90° angle left, then ⅜″ to smoothed 90° angle left. ⅜″ to 90°angle right at core. ¼″ to divot (as per previous paragraph). At end ofdivot, ½″ to next divot, then ½″ to next divot. Following thirdconsecutive divot, second male adapter begins immediately (as perprevious paragraph). This repeats until a total of 6 male adapters havebeen created. Set of 3 divots follows 6th male adapter (as per previousparagraph). Then begins the last, unique male adapter. ⅛″ to 90° angleright, then ⅛″ to smoothed 90° angle left. ¼″ to smoothed 90° angleleft, then ¾″ to smoothed 90° angle left. ¼″ to 90° angle left. ⅜″ to90° angle right, then ⅛″ to meet core's top edge (level).

As will be appreciated, these embodiments of adapter bracket 26 are onlyillustrative, and others may be devised according to the need tointerconnect the height adjustor with specific desks, modular furnituresystems, office cubicle systems, and building features such as walls andfloors.

In a preferred embodiment, adapter bracket 26 is formed from 14 gaugesteel.

Haworth Bent Universal Adapter Bracket (FIGS. 16F-16J).

In still another embodiment, the adapter bracket 26 may include a bentuniversal adapter bracket as illustrated in FIGS. 16F-16J. Similar tothe universal adapter bracket described above in reference with FIGS.16A-16E, there are preferably 7 right-side adapters. The right-sideadapters are shown at the top of the adapter and include topmost adapter27 r, which has an upward protrusion to guard against dislodgement, aswell as 6 generally hook-shaped adapters 27 s. The topmost adapter 27 rand the hook-shaped adapters 27 s preferably include the same dimensionsas described above.

In this example, the adapter bracket 26 is bent at a central portionthereof. Referring to FIG. 16F, the right-side adapters 27 r, 27 s areshown at a top portion of the adapter bracket 26 and the left-sideadapters 29 are shown at a bottom portion of the adapter bracket 26. Anintermediate portion between the right-side adapters 27 r, 27 s and theleft side adapters 26 are bent at two positions 27 x, 27 w. As a firstlateral side extends vertically downwards from a position at the topmostadapter 27 r, the adapter bracket 26 is bent at a first position 27 xand extends horizontally at a second lateral side on a plane that issubstantially perpendicular to the first lateral side. As the secondlateral side extends horizontally, the adapter bracket is bent again ata second position 27 w and extends vertically downwards to form a thirdlateral side that is substantially parallel to the first lateral sideand substantially perpendicular to the second parallel side.

FIG. 16G illustrates the adapter bracket 26 in a flat configuration andbefore being bent. As illustrated in FIG. 16G, in a preferred example,the adapter bracket 26 measures approximately 492 mm by 50.5 mm in aflat configuration and prior to being bent. Referring to FIG. 16H, across-sectional view of the bent adapter bracket 26 is illustrated. FIG.16H illustrates the first lateral side extending vertically downwardlybefore the adapter bracket 26 is bent at a first position 27 x, thesecond lateral side extending horizontally before the adapter bracket 26is bent at a second position 27 w, and the third lateral side extendingvertically upwards. In a preferred example, the first lateral side mayextend vertically approximately 26.5 mm until the first bending position27 x and the third lateral side may extend vertically approximately19.05 mm from the second bending position 27 w.

FIG. 16I illustrates a top view of an embodiment of another universaladapter bracket 26 in a flat configuration according to the presentinvention. In this example, the adapter bracket 26 is similar to theadaptor bracket 26 illustrated in FIG. 16F-H but may include differentdimensions. In a preferred example, the adaptor bracket 26 measuresapproximately 19 inches or about 482.6 mm by approximately 2.5 inches orabout 63.5 mm. The adaptor bracket is bent above a middle portion thatis approximately 0.75 mm below the left-side adapters 29 and 1.125 mmabove the right-side adapters 26 r, 26 s. In this example, protrusionsor nubs are included between the right-side adapters 26 r, 26 s but in apreferred example, these protrusions may be removed such that the areabetween the right-side adapters 26 r, 26 s is flat.

FIG. 16J illustrates a top view of an embodiment of another universaladapter bracket 26 in a flat configuration according to the presentinvention. In this example, the adapter bracket 26 may also be bent butmay include different shaped right-side adapters 27 y, 27 z. Also, thedimensions of the adaptor bracket 26 may be approximately 18.25 inchesor about 463.6 mm. The adaptor bracket is bent above a middle portionthat is approximately 0.75 mm below the left-side adapters 29 and 1.125mm above the right-side adapters 26 r, 26 s.

Outer Tube Bracket

In another embodiment, as shown in FIGS. 17A-C, 18, and 19, an adapterbracket is formed integrally with a portion of outer tube 34. As shownparticularly in FIGS. 18 and 19, in one embodiment an outer tube 34comprising an outer tube bracket comprises two L-shaped sections thatare joined, for example, by welding.

Section 33 comprises an array of adapters, e.g. adapters 27 t, 27 u, and27 v. The size, shape, and spacing of these adapters preferablycorrespond to the furniture-side adapters of any one of the previouslydescribed adapter brackets, including for example the Ethos Spaceadapter bracket depicted in FIGS. 10A-F, the Universal adapter bracketdepicted in FIGS. 16A-E, or any other adapter designed to work with anyother type of furniture. Preferably, adapters 27 t, 27 u, and 27 vextend beyond outer tube 34 about 1.5″, plus or minus about 0.5″.Alternatively, instead of being furnished with hook or tab-shapedadapters, section 33 can incorporate holes for fasteners to facilitateattachment to a wall, a desk, or other fixed element.

Section 31 is a universal section that can be used in combination withvarious different embodiments of section 33. As shown in FIGS. 18 and19, when joined, sections 31 and 32 form an outer tube 34.

In the exemplary embodiment depicted in FIGS. 17A-C, 18, and 19, 14adapters 27 u are identical and of a generally hook-shapedconfiguration. Topmost adapter 27 t has an upward protrusion to guardagainst dislodgement. Further, in this embodiment, bottommost 2 adapters27 v face the opposite way (hook directed up) from the other adapters.

Described below are the dimensions of a preferred embodiment of an outertube bracket. Angles and distances are exemplary. In other embodiments,more or fewer adapters of differing dimensions and shape may beprovided.

Bracket Core: Bracket is cnc-cut hot rolled steel; 25″ in length, 8⅛″ inwidth. 5/64″ depth.

Right Side Male Adapters: 17 male adapters; 14 identical and 3 mutuallyunique. Extend 11/32″ from bottom edge of core to smoothed 90° angleleft. 13/32″ to smoothed 90° angle left, then 7/32″ to 90° angle left.3/32″ to smoothed 90° angle right, then ⅛″ to smoothed 90° angle rightat core. 11/16″ to second adapter, 90° angle right. 11/32″ to smoothed90° angle left, then 11/32″ to smoothed 90° angle left. ¼″ to 90° angleleft. 3/32″ to smoothed 90° angle right, then ⅛″ to smoothed 90° angleright at core. 9 5/16″ to third adapter, smoothed 90° angle right. 3/32″to smoothed 90° angle right, then 3/16″ to 90° angle left. ¼″ tosmoothed 90° angle left, then ⅝″ to smoothed 90° angle left. ¼″ to 90°angle left. 3/32″ to smoothed 90° angle right, then 3/32″ to smoothed90° angle right at core. Repeat adapter 13 times, spaced at 1″ from endto end. Last adapter at top begins 21/32″ from end of previous adapter,as smoothed 90° angle right. 3/32″ to smoothed 90° angle right, then3/16″ to 90° angle left. ¼″ to smoothed 90° angle left, then ⅞″ tosmoothed 90° angle left. ¼″ to smoothed 90° angle left. ¼″ to smoothed90° angle right, then 3/32″ to smoothed 90° angle right at core.

Universal Section: Universal section is 25″ in height and 11⅛″ wide,bent 90° left at 4 5/64″ from left edge. 4 holes along top edge: ¼″ indiameter with centers 1″ from top edge. 2 holes before left bend,equidistant from edge and bend, and with their centers 2 9/16″ apart. 2holes after bend, equidistant from bend and edge, and with centers 59/16″ apart.

Etho Space Section: Etho Space section is 25″ in height and 12 15/32″wide, bent 90° left at 4 3/64″ from right edge. 4 holes along top edge:¼″ in diameter with centers 1″ from top edge. 2 holes before right bend,equidistant from bend and edge, and with centers 5 9/16″ apart. 2 holesafter bend, equidistant from bend and edge, and with centers 5 9/16″apart. Adapters are situated along right edge.

Also disclosed herein is a method for adjusting the height of a worksurface using the disclosed height adjustor apparatus. The methodpreferably includes:

1) Selecting a height adjustment apparatus comprising at least onetelescoping tube assembly, each comprising an inner tube, an outer tube,a top, a bottom, and an electric linear actuator, and a first bracketconnected to the top portion of the inner tube of each telescoping tubeassembly, the first bracket for supporting the work surface and causingit to move up or down as the respective inner tube moves up or down;2) Selecting an adapter bracket comprising two sides, a first side forattachment to one of the at least one telescoping tube assemblies, and asecond side custom-designed for attachment to a specific model offurniture or another fixed element, such as a wall;3) Coupling the telescoping tube assembly to the fixed element byattaching the respective sides of the adapter bracket to the telescopingtube and the furniture or other fixed element and coupling the firstbracket to the work surface;4) Electrically connecting the linear actuators to a linear actuatorcontroller and to a standard electrical outlet; and5) Operating the controller so as to cause the linear actuators to movethe work surface up or down.

In one embodiment, the fixed element is a desk. In another embodiment,the fixed element is a portion of an office cubicle system or a modularfurniture system. In still another embodiment, the fixed element is awall. In a further embodiment, the work surface is a desktop.

FIGS. 20-21B depict another embodiment 220 of the work surface heightadjusting apparatus of the present invention, mounted to a frame 212.Frame 212 can be, for example, a panel frame or other component of amodular furniture system or office cubicle system. Frame 212 can be aframe of a desk or work station. Alternatively, rather than beingmounted to a frame, work surface adjusting apparatus 220 can be mountedto a wall or other fixed surface, or secured to a footing or to a floor.

In the embodiment of FIGS. 20-21B, telescoping tube assemblies 222 areconnected to frame 212 by angle brackets 223. In a preferred embodiment,angle brackets 223 comprise 2 sides that form a right angle. In avariation, angle bracket 223 comprises more than 2 sides and more than 1angle. See, e.g., FIGS. 24A-24E.

One side of angle bracket 223, which may be called the “furniture side”or the “adapter side,” comprises a set of generally hook-shaped ortab-shaped adapters 227, for mounting to corresponding slots in a fixedelement, such as a panel frame or other component of a modular furnituresystem or office cubicle system. The other side of angle bracket 223comprises holes 248 for fasteners that connect angle bracket 223 totelescoping tube assembly 222. In a preferred embodiment, angle bracket223 comprises 2 holes 248 near each end of the bracket, for a total of 4holes 248. In a preferred embodiment, one or more connecting plates 240are affixed to telescoping tube assembly 222. Each connecting platecomprises 2 or more holes 241 for receiving fasteners that pass throughcorresponding holes 248 in angle bracket 223.

In a preferred embodiment, each connecting plate 240 comprises 2threaded holes 241 for receiving machine screws. In a preferredembodiment, 2 connecting plates 240 are affixed to each telescoping tubeassembly 222, with one connecting plate 240 near the top end oftelescoping tube assembly 222 and another connecting plate 240 near thebottom end of telescoping tube assemble 222. In a preferred embodiment,the connecting plates 240 are affixed to the telescoping tube assemblies222 by welding. In another embodiment, the connecting plates 240 areaffixed to the telescoping tube assemblies 222 by an adhesive. Inanother embodiment, connecting plates 240 are affixed to the telescopingtube assemblies 222 by means of screws. In a preferred embodiment,connecting plate 240 has a narrowed middle section and wider endsections. In an embodiment, the overall shape of connecting plate 240resembles the shape of a double-headed wrench.

Installation of a preferred embodiment of horizontal surface heightadjustment apparatus 220 proceeds preferably as follows: In a preferredembodiment, each telescoping tube assembly (leg) 222 has 2 connectingplates 240 affixed to one side of the leg. Each plate 240 has twothreaded holes 241 for receiving a machine screw. First, the anglebrackets 223 are attached to the legs 222. Each of the four holes in theangle brackets aligns with one of the two holes in each of the twoconnecting plates on the telescoping tube assembly (leg) 222. The anglebracket 223 and connecting plate 240 are fastened together with fourmachine screws (not shown). The machine screws are inserted through thefour holes 248 in the angle brackets 223 and into the two receivingholes 241 in each of the two connecting plates 240. All machine screwsare then screwed into the threaded holes, thereby joining the anglebrackets with the legs 222 to which the connecting plates are attached.The joined legs and angle brackets are then mounted on the frame or workstation wall 212 by inserting the adapter hooks 227 into thecorresponding slots in the frame or work station wall 212.

Various exemplary embodiments of angle bracket 223 will now be describedin detail.

In an embodiment of angle bracket 223 designed for use with multiplefurniture types, shown in FIGS. 22A-22D, there are preferably 8adapters. These include adapter 227 r, which has a protrusion to guardagainst dislodgement, as well as 7 generally hook-shaped adapters 227 s.Spacing between successive adapters 227 s, measured from the top of oneadapter 227 s to the top of the next adapter 227 s, is about 3″. In anembodiment, the gaps or spaces between right-side adapters include 3divots 225, each divot 225 having a maximum depth of about 1/16″ and atotal length of about ½″. In other embodiments, more or fewer adaptersof differing dimensions and shape may be provided.

The embodiment of FIGS. 22A-22D is a universal angle bracket that isdesigned to fit most furniture systems and work stations. In order toaccomplish this, the universal angle bracket provides adapters thataccommodate the size, shape, and spacing of slots supported by a widevariety of furniture systems and work stations.

Another embodiment of angle bracket 223, shown in FIGS. 23A-23D, is foruse with, e.g., All Steel furniture. In this embodiment, 20 adapters 227a are of an identical, generally hook-shaped configuration. A singleadapter 227 b includes a protrusion to guard against dislodgement. Asshown in detail in FIGS. 23C and 23D, the bracket preferably furtherincludes a notch opposite each right-side adapter 227 a or 227 b.Preferably, as shown in detail in FIGS. 23C and 23D, each adapter 227 aor 227 b includes a curved leading edge.

Another embodiment of angle bracket 223 is designed for use with, e.g.,AO furniture. In this embodiment, as shown in FIGS. 24A-24E, 14 adapters227 d are identical and of a generally hook-shaped configuration. Twoadapters 27 c at one end of the bracket are tab-shaped, and adapter 227e at the other end of the bracket has a protrusion to guard againstdislodgement. See detailed views of preferred adapter shapes in FIGS. 24C-E. Preferably, there is an elongated space between the secondtab-shaped adapter 227 c and the first hook-shaped adapter 227 d.Preferably, this space or gap is about 5″ long. In an embodiment, anglebracket 223 preferably comprises an additional bend 228 along a lineparallel to the longitudinal axis of angle bracket 223, and alsoparallel to the main 90° bend of angle bracket 223, giving angle bracket223 a cross-section resembling an asymmetrical U-shape. See FIG. 24E. Ina preferred embodiment, the bend line is about 27/32″ from the outeredge of the adapters and about 1 55/64″ from the main 90° bend of anglebracket 223, resulting in an asymmetrical U-shaped cross-section, withone side of the “U” longer and bent at a different angle than the otherside. Preferably, the measure of the dihedral angle between the twosides that meet at bend 228 is about 125°.

Angles and distances are exemplary. In other embodiments, more or feweradapters of differing dimensions and shape may be provided. The angledconfiguration of this embodiment is desirable in order to meet theunique configuration of AO furniture.

Another embodiment of angle bracket 223, shown in FIGS. 25A-25D, is foruse with, e.g., Compatico furniture. In this embodiment, as shown inFIGS. 25A and 25B, 20 adapters 227 g are of an identical, generallyhooked-shaped configuration. A single adapter 227 f at one end of thebracket is of different shape, having a protrusion to guard againstdislodgement. In an embodiment, each adapter 227 g and 227 f includes astraight leading edge. See FIGS. 25C and 25D for details of adaptershapes.

Another embodiment of angle bracket 223, shown in FIGS. 26A-26D, is foruse with, e.g., Ethos Space furniture. In this embodiment, as shown inFIGS. 26A and 26B, 15 adapters 227 i are identical and of a generallyhook-shaped configuration. One adapter 227 h has a protrusion to guardagainst dislodgement. Further, in this embodiment, the 2 adapters 227 jface the opposite way (hook oppositely directed) from the otheradapters. See enlarged views of each adapter shape in FIGS. 26C-D.Angles and distances are exemplary. In other embodiments, more or feweradapters of differing dimensions and shape may be provided.

Another embodiment of angle bracket 223, shown in FIGS. 27A-27D, is foruse with, e.g., Knoll Dividends furniture. In this embodiment, as shownin FIGS. 27A and 27B one adapter 227 k has a protrusion to guard againstdislodgement. The other adapters are grouped in groups of two, with aspace having no adapters in between groups. The spacing between adapterswithin each group of two adapters 2271 (measured from the top of oneadapter 2271 to the top of the next adapter 2271) is about 1½″. The gapbetween two-adapter groups is about 3″, measured from the top of theadapter 2271 on one side of the gap to the top of the adapter 2271 onthe other side of the gap. Adapters 2271 are generally T-shaped, as maybe seen in the detailed views of FIGS. 27C-D. In other embodiments, moreor fewer adapters of differing dimensions and shape may be provided.

Another embodiment of angle bracket 223, shown in FIGS. 28A-28D, is foruse with, e.g., Steel Case furniture. In this embodiment, as shown inFIGS. 28A and 28B, one adapter 227 m has a protrusion to guard againstdislodgement, and one adapter 227 o is L-shaped. The other adapters(adapters 227 n, preferably 11 in number) are generally hook-shaped,with a slant leading edge. The shapes of the various adapters are shownin detail in FIGS. 28C-D. The slant-edged adapters 227 n are groupedtogether in one half of bracket 223, and there is a gap having noadapters extending from the last of the slant-edged adapters to theL-shaped adapter. The gap is about 9″ in length. In the gap area, at apoint about 2¼″ from the end of the bracket, the adapter side of thebracket protrudes outward about ⅛″.

Angles and distances are exemplary. In other embodiments, more or feweradapters of differing dimensions and shape may be provided.

Another embodiment of angle bracket 223, shown in FIGS. 29A-29D, is foruse with, e.g., Techion furniture. In this embodiment 20 right-sideadapters 227 q are of an identical, generally hook-shaped configuration,except for adapter 227 p at one end, which has a protrusion to guardagainst dislodgement. In an embodiment, the bracket further includes anotch opposite each adapter. In an embodiment, each adapter includes acurved leading edge. See enlarged views of the adapter shape and notchesin FIGS. 29C and 29D. In other embodiments, more or fewer adapters ofdiffering dimensions and shape may be provided.

For additional exemplary adapter dimensions, angles, and distancesapplicable to embodiments of angle bracket 223, see the detaileddescriptions of the various embodiments of adapter bracket 26, supra,particularly including the exemplary dimensions of right side maleadapters set forth therein.

The description contained herein is for purposes of illustration and notfor purposes of limitation. Changes and modifications may be made to theembodiments of the description and still be within the scope of theinvention. Furthermore, obvious changes, modifications or variationswill occur to those skilled in the art. Also, all references cited aboveare incorporated herein by reference, in their entirety, for backgroundand to assist the reader of this disclosure.

While the invention has been shown and described herein with referenceto particular embodiments, it is to be understood that the variousadditions, substitutions, or modifications of form, structure,arrangement, proportions, materials, and components and otherwise, usedin the practice and which are particularly adapted to specificenvironments and operative requirements, may be made to the describedembodiments without departing from the spirit and scope of the presentinvention. Accordingly, it should be understood that the embodimentsdisclosed herein are merely illustrative of the principles of theinvention. Various other modifications may be made by those skilled inthe art which will embody the principles of the invention and fallwithin the spirit and the scope thereof.

While embodiments related to adjustable work surfaces have beendescribed, such descriptions are not to be understood as limiting. Forexample, the described adjustor can also be adapted to adjust arestaurant table, a hospital bed, or other adjustable items such as,e.g., an assembly line or a server rack

What is claimed is:
 1. An apparatus for adjusting the height of asurface comprising: a telescoping tube assembly comprising an innertube, an outer tube, a top plate, and a bottom plate; and an adapterbracket comprising a first side having an array of generally hook-shapedadapters that are received in corresponding slots on the telescopingtube assembly and a second side attached to a fixed element by one ormore adapters that protrude from the second side and are received incorresponding slots on the fixed element, wherein the top plate of thetelescoping tube assembly is coupled to the inner tube and to thesurface so that the surface is raised as the inner tube moves up and thesurface is lowered as the inner tube moves down.
 2. The apparatus ofclaim 1, wherein the fixed element is furniture and the adapter bracketcomprises an array of adapters, the size, shape, and placement of whichare chosen to permit a single bracket to be attachable to two or moredifferent furniture models, the different furniture models differing inthe size, shape, or placement of slots.
 3. The apparatus of claim 1,wherein the fixed element is a desk.
 4. The apparatus of claim 1,wherein the fixed element is a portion of an office cubicle system or amodular furniture system.
 5. The apparatus of claim 1, wherein the fixedelement is a wall.
 6. The apparatus of claim 1, wherein the surface is adesktop.
 7. The apparatus of claim 1, wherein the inner tube is movedrelative to the outer tube by a linear actuator driven by an electricmotor.
 8. The apparatus of claim 1, wherein the second side of theadapter bracket comprises holes to accommodate fasteners.
 9. Theapparatus of claim 1, wherein the telescoping tube assembly furthercomprises a sleeve affixed to the outer tube and the telescoping tubeassembly slots are formed in the sleeve.
 10. The apparatus of claim 1,further comprising one or more suction cups, wherein the top plate iscoupled to the surface using the one or more suctions cups.
 11. Theapparatus of claim 10, wherein the one or more suction cups comprise twosuction cups on each end of the top plate, each suction cup comprising abase and a handle for activating a suction effect and securing thesurface to the top plate.
 12. The apparatus of claim 10, wherein thesuction cup is coupled to the top plate using a pin and coupled to thesurface using a suction cup base.
 13. An apparatus for adjusting theheight of a work surface comprising: a lifting column comprising anelectric linear actuator; a bracket coupled to the top of the liftingcolumn, the bracket being adapted to support a work surface; and anadapter bracket adapted to connect the lifting column to a furnituresystem, the adapter bracket having a first side comprising a first arrayof adapters adapted to fit into a first array of slots on the liftingcolumn, and a second side comprising a second array of adapters adaptedto fit into a second array of slots in a first furniture system, thesecond array of adapters are also adapted to fit into an array of slotsin a second furniture system, wherein the slots in the second furnituresystem differ in size, shape, number, or relative positioning comparedto the slots in the first furniture system.
 14. The apparatus of claim13, wherein the second array of adapters is also adapted to fit into afourth array of slots in a third furniture system, the fourth array ofslots differing from either the second array of slots or the third arrayof slots as to the size, shape, number, or relative positioning of theirrespective constituent slots.
 15. The apparatus of claim 13, wherein thelifting column is a telescoping tube assembly comprising an inner tubethat moves up and down relative to an outer tube.
 16. The apparatus ofclaim 13, wherein the telescoping tube assembly further comprises asleeve having a U-shaped cross-section welded to the outer tube and thefirst array of slots is formed in a corner portion of the sleeve. 17.The apparatus of claim 13, further comprising one or more suction cupsconfigured to connect the bracket to the work surface.
 18. The apparatusof claim 17, wherein the one or more suction cups comprise two suctioncups on each end of the bracket, each suction cup comprising a base anda handle for activating a suction effect and securing the work surfaceto the bracket.
 19. The apparatus of claim 17, wherein the suction cupis coupled to the top plate using a pin and coupled to the work surfaceusing a suction cup base.
 20. An apparatus for adjusting the height of asurface comprising: a telescoping tube assembly; an adapter bracketcomprising a first side having an array of generally hook-shapedadapters that are received in corresponding slots on the telescopingtube assembly and a second side attached to a fixed element by one ormore adapters that protrude from the second side and are received incorresponding slots on the fixed element, wherein the adapter bracket isbent at a first position and a second position such that the adapterbracket further comprises a first lateral side, a second lateral sidethat is substantially perpendicular to the first lateral side, and athird lateral side that is substantially parallel to the first lateralside.